Flight number record
DL 1342
Delta Air Lines · Salt Lake City to Sacramento
- Route
- SLC → SMF
- Departs
- 15:30
- Flights
- 347
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1342, check with Delta Air Lines.
DL 1342 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 347 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 1342's record is 6 points better than the US average of 77.6%. That gap is worth roughly 60 fewer late arrivals for every thousand flights.
Key figures
On time
83.6%
Arrivals under 15 minutes late, of 342 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
1.44%
National rate is 1.81%
1 hour+ late
7.0%
National rate is 8.1%
These figures cover 347 flights between July 2025 and June 2026. The median arrival is 8 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Schedule
When DL 1342 flies
DL 1342 flies SLC to SMF without a single fixed slot. Its most common scheduled departure was 15:30, used on 114 of 347 flights, with 15:20 (53 flights) and 15:35 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 15:30114 flights32.9%
- Departs 15:2053 flights15.3%
- Departs 15:3540 flights11.5%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 1342 runs 11 points better at 83.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 1342 next to SLC to SMF
Every carrier on SLC to SMF combined arrived on time 85.7% of the time across 2,158 flights, so DL 1342 is 2 points behind it. Delta flew 1,509 flights on the same city pair under all its flight numbers, including this one, and those ran 87.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1342thin sample | 347 | 83.6% | 69 min | 1.44% | B |
| All Delta Air Lines on SLC–SMF | 1,509 | 87.3% | 63 min | 0.86% | A+ |
| All carriers on SLC–SMF | 2,158 | 85.7% | 61 min | 0.70% | A+ |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 1342 quarter by quarter
Quarter by quarter DL 1342 held fairly steady: 85.9% in Jul–Sep 2025, 79.5% in Oct–Dec 2025, 81.7% in Jan–Mar 2026 and 86.7% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights85.9%
- Oct–Dec 202579 flights79.5%
- Jan–Mar 202685 flights81.7%
- Apr–Jun 202691 flights86.7%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1342 did best on Saturday at 91.5% on time and worst on Tuesday at 78.4%. Each day rests on about 50 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 1342 runs late
One category carries most of the weight here. Carrier accounts for 70% of the 3,836 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 70%Carrier
- 23%Late-arriving aircraft
- 7%National Airspace System
The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,677 of the 3,836 delay minutes reported here. The split is drawn from 3,836 delay minutes reported on DL 1342.
Cancellations sit at 1.44% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
7.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 532 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
DL 1342 is not only a SLC to SMF flight. It also flew SMF to SLC (347 flights, 83.9% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 347 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SMF to SLCthin sample | 347 | 83.9% | 82 min | 1.73% | B |
What to do with this
Booking DL 1342
For a booking, read DL 1342 as 83.6% on time with 1.44% cancelled over 347 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SLC to SMF, every carrier and departure
- SMF to SLC, the return direction
- Delta Air Lines 1423 on the same route86.3%
- Delta Air Lines 1582 on the same route89.0%
- Delta Air Lines 1367 on the same route93.3%
- Salt Lake City International (SLC) delay statistics
- Sacramento International (SMF) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.